A pound of sodium metal in the river This is what happens when a pound of sodium hits water. Facebook Prev Article Next Article Experiments Checkout these cool gadgets... Related Posts 100 lbs (45 kg) of Magnetic Putty Levitating Superconductor on a Möbius Strip World’s Longest Running Science Experiment World’s Simplest Electric Train Compilation of Amazing Science Experiments What Would Happen If Water Filled Up A House?